cbs 5 reporter steve lard says if you're heading to tahoe, don't plan on getting there any time soon. >> reporter: well, it may be a scenic drive, but it is a very slow one heading eastbound on i- 80. over the hill, you can see the long line of traffic behind me. it is a friday night. it is a holiday weekend. and it is snowing off and on. add all of that together and you're talking about a drive from the bay area to the state line of maybe eight hours. we've seen families with their cars full of presents, pulled over, paying $30 a pop to get their chains installed. in some cases, they've done this before. they're installing their own chains, taking a half an hour out of that long drive. if you're planning on heading over the hill, make sure you have time on your side. on eastbound i-80, steve large, cbs 5. >>> the bad weather here and across the country is causing huge travel problems for people trying to get home for christmas. at sfo, more than 100 flights were cancelled today because of heavy rain and wind. add to that the blizzard in the midwest which has grounded more flights. >>